Source note · SIP ALG problems on firewalls and routers
RFC 6314 builds its SIP NAT traversal practices on the assumption that NATs do not contain SIP-aware ALGs. It notes that experience shows such ALGs can have an adverse impact on SIP functionality.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SIP NAT traversal
- Subsystem
- NAT traversal
- Deployment
- on-premises, multi-tenant, hybrid
- Region
- not restricted
- Release range
- Informational RFC July 2011
- Checked
- 2026-09-25
Sources
- RFC 6314: NAT Traversal Practices for Client-Server SIP — IETF / RFC Editor · tier 1 standards and regulators · Section 3 Problem Statement
Cite this note
APA
WarmTransfer. (2026, September 25). SIP ALG problems on firewalls and routers: source note sip-alg-problems-rfc6314-assumes-no-alg. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-alg-problems-rfc6314-assumes-no-alg
BibTeX
@misc{warmtransfer-claim-sip-alg-problems-rfc6314-assumes-no-alg,
title = {SIP ALG problems on firewalls and routers: source note sip-alg-problems-rfc6314-assumes-no-alg},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-alg-problems-rfc6314-assumes-no-alg},
note = {Source note sip-alg-problems-rfc6314-assumes-no-alg, checked 2026-09-25}
}